Grinding-mill.



No. 7|5,504. v Patnted Dec. 9, |902.

J. H. PENDLETON.

Gmumm; mu.. (Application tiled July 9, 1901.) (No Model.)

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UNrrnn STATES ATENT JOHN H. PENDLETON, OF JAMESBURG, NEW JERSEY, ASSIGNOR TO, THE

PENDLETON-TAPSOOTT COMPANY, OF NEW YORK, N. Y., A CORPO- RATION OF NEW JERSEY.

GRlNDlNG-IVIILL.

SPECIFICATION forming part of Letters Patent No. 715,504, dated December 9, 1902.` Application nea July 9, 1901. serai No. 67,604. m man To a/ZZ whom it may concern:

Be it known that I, JOHN H. PENDLETON, a citizen of the United States, and a resident of -J amesburg, in the county of Middlesex and State of New Jersey, have invented a new and useful Improvement in Grinding-Mills, of which the following is a specification.

This invention relates to that class of grinding-mills which are known as` disk mills; and it consists in a certain organization of such a mill and certain combinations of its details hereinafter described and claimed, whereby the efficiency of a mill of this class is greatly increased.

Figure 1 is a plan View of a mill embodying my invention; Fig. 2, a central vertical sectional view of the same. Fig. 3 shows a transverse vertical section in the line 3 3 of Fig.

, 2 viewed in the direction of the arrows on said line; Fig. 3, a transversese'ction in the line 3"L 3L of Fig. 2 viewed in the direction of the arrows on said line; Fig. 3b, a front end view of the shaft of the rotating disk; Fig. 4, a face view of the stationary grinding-disk; Fig. 5, a face view of the rotary grindingdisk; Fig.l 6, a horizontal section of the grinding-disks and their immediately-connected parts, taken approximately at the level of the aXis of the rotating disk; Fig. 7, a detail View which will be hereinafter explained; Fig. 8, a diagrammatic plan view illustrating a modification.

ct b c designate a framing comprising a bed-y plateand standards b c. The standard b carries the stationary grindingdisk d. The standard c has in -or on its upper part a stationary bearing e for the horizontal main or driving shaft f, which is arranged with its axis opposite the center of Ithe disk d. This shaft is represented as furnished with a driving-pulley g and a fly-Wheel It. Between the driving-shaftf and the stationary disk there is arranged with itsaxis parallel with that of f a horizontal shaft t', which carries the rotary grinding-disk s. This shaft 'L' runs in bushings 10 in a forked bearing jj in the arm 7c ofI a rock-shaft Z, which is arranged at one side of but below the shaft f in bearings m m in the lower parts of the standards b and c. The said shaft t' has affixed upon it at its end `nearest the shaft f an eccentric q, which is iitted to turn in a bearing r on the arm n of another horizontal rock-shaft o, which is arranged, similarly to l, but at the other side of the shaft f, in bearings p p in the standards b and c. The other end of the said shaft fi, which carries the rotary grinding-disk s, passes through an opening 11 in the standard b and has formed upon it an eccentric or rock-shafts and their arms n and 7o to rock,

and the shaft t is caused to have, in addition to its rotary lnotion, a movement bodily in an arc described from the center of the rock-v shaft Z, and the centers of the eccentrics q t are caused to receive regular circular or more or less irregular gyratory movements, according to the degree of their eccentricity. For example, with properly-determined eccentricity and that of t being halfthat of q the gyration may be made approximately circular.

The stationary grinding-disk cl, though carried by the standard b, is not attached directly thereto, but is attached to a door-like lplate x, which is hinged on one side to the said standard, as shown at 13 in Figs. l and 6, and is fastened thereto at the other side by any suitable detachable fastening-for example, a hook y, which is pivoted to the standard, as shown in Figs. l and?, and drops over a lug 14 on the said plate 0c, where it is secured by a screw 15, which screws through said hook and presses on said lug. This swinging plate or door a: carries at the back of the grinding-disk CZ a-hopper 16, through which the material to be ground is fed between the two grinding-disks. These disks when the door m is closed and the mill is in operative condition'are both contained in a cavity 17 formed within the standard, the said on said shaft, a Second rock-shaft andan arm thereon containing a bearing for said 4eccentric, bearings for the two rock-shafts, a crank on said shaft, a rotary shaft having a stationary bearing, and a slotted member on the latter shaft receiving the wrist of said crank, substantially as hereinv described.

6. In a mill, the combination of two facing grinding-disks, a rotary shaft carrying one of said disks, a rock-shaft and an arm thereon containing a bearing for said rotary shaft, an eccentric on said shaft, a second rock-shaft and an arm thereon containing a bearing for JOHN H. PENDLETON.

Witnesses:

FREDK. HAYNES, L. M. EGBERT. 

